灌溉排水学报2012，Vol.31Issue(1)：10-14,32,6.
近50年新疆参考作物蒸发蒸腾量的时空演变分析
Analysis of Temporal-spatial Characteristics of Reference Evapotranspiration in Xinjiang Province During 1960—2009
摘要
Abstract
reference crop evapotranspiration（ET0） is the basic of agricultural water calculation and forecasting.The monthly evapotranspiration of fifty-three weather stations in Xinjiang province in 1960—2009 was estimated using Penman-Monteith equation which was recommended by FAO.The spatial distribution of ET0 was obtained by GIS and IDW method was used for spatial interpolation.The ET0 changing trends of all sits are divided in to five categories through clustering analysis method.Then the spatial and temporal variation characteristics and influence factors of the ET0 are discussed,in which,Morlet wavelet transform method and the trend rate are also used.The result shows that：in the past 50 years,The regional average ET0 of Xinjiang presents a significant decreasing trends.The interannual variability trends of ET0 in different areas are markedly different.The temporal variability of regional average ET0 has a quasi-periodicity of 25~30 years experiencing three alternating stages（high→low→high）.ET0 yearly distribution tends to a single-peak shape,and the peak values of different stations are significant different.The general characteristics of average years ET0 space distribution is increased from northwest to southeast,and have a highly consistency with the rolling terrain.The ET0 rate in Most of the region in Xinjiang are negative,conform to the ＂evaporation paradox＂ rule,mainly because the influence of the decreasing wind speeds to the ET0 is bigger than the increasing temperature.Since 1992,ET0 in Xinjiang shown an upward trend as the temperature rising,the ET0 evolution in the future need a further forecast and research.关键词
参考作物蒸发蒸腾量/时空变化/新疆地区/Penman-Monteith公式Key words
reference crop evapotranspiration（ET0）/spatiotemporal variability/Xinjiang Province/Penman Monteith equation分类
农业科技引用本文复制引用
石鑫,吴普特,王玉宝,赵西宁,赵建民..近50年新疆参考作物蒸发蒸腾量的时空演变分析[J].灌溉排水学报,2012,31(1):10-14,32,6.基金项目
国家自然科学基金项目 （）
国家科技支撑计划项目 （）
教育部引智项目 （）
西北农林科技大学青年学术骨干项目 （）
